Diversifying Municipal Revenue in Connecticut Report Prepared for the Connecticut Tax Study Panel Presentation November 17, 2015 David L. Sjoquist Professor of Economics Andrew Young School of Policy Studies Georgia State University Atlanta


Economic Issues Associated with Local Sales Taxes



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Economic Issues Associated with Local Sales Taxes


There are four economic issues associated with the adoption of a local sales tax that we consider: incentive effects, the amount of revenue generated, equity/fairness, and the effect on fiscal disparities.

Incentive Effects


Economic theory suggests that an increase in the sales tax rate will reduce the sales tax base since the increase in the sales tax rate is the same as a price increase. It is reasonable to assume that the price elasticity of the sales tax base is between 0.7 and 1.0. These elasticities suggest that the adoption of a one percent local sales tax rate statewide would result in a decrease in the sales tax base of between 0.66 percent and 0.94 percent.

The current basic sales tax rate in Connecticut is 6.35 percent,12 and state sales tax revenues due in fiscal year 2013-14 was $3,869.3 million.13 A one percent local sales tax adopted statewide would increase the basic statewide sales tax rate by 15.7 percent. In the absence of any loss of sales tax base due to the tax rate increase, the sales tax revenue would increase by 15.7 percent, or by $607.4 million. However, assuming price elasticities of 0.7 and 1.0 implies that total sales tax revenue would increase by 15.0 and 14.7 percent, respectively. This would consist of new revenue to towns but a loss of revenue to the state of between 0.66 and 0.94 percent. Assuming a price elasticity of 1.0, the local sales tax revenue from a one percent local sales tax would be $603.9 million. State sales tax revenue would fall by $36.4 million.

There is a substantial literature on the mobility of sales tax bases, although much of the focus is on the effect of differential sales tax rates on cross-bordering shopping.14 These studies generally find that a one percentage point higher interstate sales tax rate differential is associated with per capita sales along a state’s border that are between one and 7 percent lower. For example, Walsh and Jones (1988) studied West Virginia’s phased-in reduction of the sales tax rate on grocery purchases. For each percentage point reduction in the sales tax rate they find that grocery sales along the West Virginia border increased by about 5.9 percent. It is expected that differential sales tax rates across jurisdictions within a state would have similar effects on the location of purchases as interstate sales tax rate differentials.

Connecticut’s basic state sales tax rate is currently 6.35 percent. Connecticut borders three states, New York, Rhode Island, and Massachusetts, with the bulk of its border adjacent to Massachusetts. Rhode Island and Massachusetts do not have local sales taxes; their state tax rates are 7.0 percent and 6.3 percent, respectively. New York has a state sales tax rate of 4 percent and local sales tax that range up to 4.88 percent. Along New York’s border with Connecticut, the total sales tax rates in New York are generally in the range of 8.125 percent to 8.375 percent. If Connecticut added a one percent local sales tax, Connecticut border cities would lose some sales to Massachusetts, and might experience a small drop in sales that are made to buyers from New York.

Local jurisdictions currently compete for property tax base, perhaps by keeping property tax rates low or offering special incentives to large developments. If local governments adopt a sales tax, one should expect that towns will compete for sales tax base as well. The difference is that the competition will be for retail facilities, e.g., shopping centers, rather than business facilities more generally (Lewis 2001).

Revenue


Appendix Table A1 provides estimates of sales tax revenues, total and per capita, by town for a one percent sales tax imposed in all Connecticut towns, with revenue going to the town from which the revenue was generated. We refer to this as the Local Sales Tax. As an alternative we estimated revenue for a Regional Sales Tax. For the Regional Sales Tax we summed local sales tax revenue across all towns in each of the nine planning districts (i.e., Councils of Government) and allocated the revenue across towns in the planning district using a formula in which half of the revenue was allocated to the host town and half was allocated on a per capita basis.

The estimated Regional Sales Tax revenue by town, total and per capita, are also presented Appendix Table A1. Appendix A explains how these estimates were developed. The last column in Appendix Table A1 is a fiscal disparities index, which is discussed below.

It needs to be stressed that these estimates should not be used for budgeting purposes; data limitation suggest that the revenue estimates should be viewed with caution and may be imprecise (see Appendix A for a discussion). Because the data do not accurately measure the tax base for each town, we did not attempt to adjust for possible changes in the base due to the tax increase and to cross border shopping. However, these estimates do provide a reasonable indication of local sales tax revenue for informing state tax policy, but not for local government budget making.

The data on state sales taxes due by town do not include sales taxes collected from out-of-state vendors, which are 21.3 percent of total sales taxes due. Since there is no obvious way to appropriately allocate this sales tax revenue to towns, we are forced to ignore the revenue collected from out-of-state vendors. The sum of the estimated revenue by town from a one percent local sales tax is thus $473.5 million.15 Local sales tax per capita by town ranges from $5 to $717, which is a large variation in per capita revenue across towns. The range for the regional sales tax is from $42 to $230, which is a much smaller range.

Obviously, the makeup of the regions can be altered (we used the towns in the planning districts out of convenience), and an alternative formula for the distribution sales tax revenue within the district could be selected. Having the state define the regions would seem to make more sense than allowing towns to decide which towns they want to with. The decision of whether the region will adopt a local sales tax could be made by vote of a majority or super majority of towns, with the possibility that the choice for each town be by referendum in that town. Or, there could be a region-wide referendum. There is no need for a regional authority, particularly if the administration of the tax is done by the state.

As expected the regional sales tax increases the revenue to towns with low local sales tax revenue per capita and decrease revenue from towns with high local sales tax revenue per capita. This can be seen in Figure 1, which plots the Local and Regional Sales Tax revenue per capita, as reported in Appendix Table A1. The line in Figure 1 represents equal values of the revenue per capita from the two sales taxes. Points above the line represent towns for which sales tax revenue per capita from the Regional Sales Tax is greater than for the Local Sales Tax. Notice that towns with lower Local Sales Tax revenue per capita are generally above the line, that is, those towns have higher Regional Sales Tax revenue per capita than Local Sales Tax revenue per capita.


Figure 1. Estimated Regional and Local Sales Tax Revenue
Figure 2 provides more detail on the distribution of sales tax revenue per capita. In particular, the figure shows that there are many more towns with Local Sales Tax revenue per capita below $75 and above $200 than for the Regional Sales Tax.
Figure 2. Distribution of Estimated Sales Tax Revenue Per Capita

Figure 3. Potential Percentage Reduction in Property Taxes Using Revenue from the Local Sales Tax and Regional Sales Tax

To the extent that the sales tax will be used to reduce property taxes, it is of interest to show the potential reduction in property taxes. Figure 3 plots the potential reduction in property taxes for the Local Sales Tax and the Regional Sales Tax. Bear in mind that because the sales tax revenue from out-of-state vendors is not included, the calculation understates the potential total reduction in property taxes by 21.3 percent. On average, property taxes could be reduced by 5.0 percent (or 6.1 percent if the revenue from out-of-state vendors is included.)



Because it is hard to make comparisons across all 169 towns, 23 towns were selected in order to provide a clearer picture of how sales tax revenue varies across towns. The 23 towns represent 5 categories of towns: large cities, small cities, rich suburbs, mixed base, and rural. Appendix Table 2A lists the towns and several demographic and economic variables for each town for two different years. Table 3 reports the latest population, Net Grand List per capita, millage rate, property tax revenue, and estimated sales tax revenue. A couple of observations. First, Bridgeport has a small sales tax base and Manchester has a large sales tax base despite the size of their population. Two, the magnitude of the difference in per capita revenue between the two sales taxes can be large.




Population

Net Grand List (in millions)

Mill Rate

Prop Tax Revenues (in millions)

Local Sales Tax Revenue (in 1000s)

Local Sales Tax Revenue Per Capita

Regional Sales Tax Revenue (in 1000s)

Regional Sales Tax Revenue Per Capita




Large Cities




























Bridgeport

147,216

$6,981

41.11

$285.96

$7,693.8

$53

$4,614.2

$134




Hartford

125,017

$3,398

74.29

$255.55

$21,528.1

$172

$259.8

$72




New Haven

130,660

$5,995

38.88

$230.99

$19,258.1

$148

$491.8

$52




Stamford

126,456

$24,294

17.89

$432.10

$19,210.7

$155

$1,883.3

$99




Small Cities




























Manchester

58,211

$3,888

35.83

$122.29

$14,005.8

$241

$10,247.2

$93




Meriden

60,456

$3,246

34.70

$113.89

$5,302.1

$87

$730.1

$74




New London

27,545

$1,565

26.60

$41.47

$5,903.8

$214

$48.3

$46




Torrington

35,611

$2,359

33.47

$79.23

$6,134.2

$170

$3,489.7

$126




Rich Suburbs




























Glastonbury

34,768

$4,208

30.50

$128.47

$4,305.7

$125

$449.9

$69




Guilford

22,417

$3,490

22.36

$77.17

$1,749.5

$78

$820.7

$87




Litchfield

8,333

$1,109

22.20

$24.79

$3,838.1

$457

$4,850.9

$121




New Canaan

20,194

$8,249

14.08

$116.62

$1,948.0

$98

$1,018.8

$107




Mixed Base




























Hamden

61,607

$4,049

37.14

$149.05

$5,544.5

$90

$1,334.5

$70




Middletown

47,333

$3,581

26.90

$95.67

$5,077.0

$107

$231.8

$45




Norwich

40,347

$2,433

26.90

$64.82

$3,968.8

$98

$480.8

$85




Windsor

29,142

$2,908

27.95

$8.22

$3,575.7

$123

$4,053.0

$163




Rural




























Bozrah

2,639

$244

22.50

$5.42

$282.3

$108

$5,668.7

$127




Durham

7,361

$732

32.19

$23.55

$410.4

$56

$2,548.4

$203




Killingly

17,233

$1,365

19.70

$28.73

$1,702.2

$98

$2,494.8

$78




North Canaan

3,241

$344

21.50

$7.49

$70.3

$21

$136.9

$90




Plainfield

15,228

$1,035

21.52

$22.46

$1,285.2

$84

$168.7

$113




Union

848

$98

23.59

$2.31

$77.6

$75

$4,675.4

$116




Washington

3,526

$1,255

11.50

$14.38

$453.2

$127

$2,658.2

$136



Table 3. Local and Regional Sales Taxes

Equity/Fairness


The sales tax in Connecticut is more regressive than the property tax (Institute on Taxation and Economic Policy 2015). However, the equity of the local sales tax will differ from the equity of the state sales tax if the local sales tax base differs from the tax base for the state.

One might also be concerned with fiscal equity, i.e., differences in the tax revenue per capita across towns. This was discussed above, where it was noted that there is a large variance across towns in local sales tax revenue per capita.

One fairness issue concerns the link between the cost of public services and sales tax revenue. The sales tax in any given city will generate revenue from tourists, shoppers and commuters from other Connecticut cities and other states. This is especially true for cities that are large retail center. Thus, a significant percentage of local sales taxes that an individual pays is likely paid to a jurisdiction other than the jurisdiction of residence, and this percentage is likely to vary widely across jurisdictions. The likely result is that there will be differences across jurisdictions in the relationship between the benefits received from public services and the taxes paid. We are unable to estimate the percentage of sales tax revenue in any town that is paid by non-residents.

Fiscal Disparities


A recent report from the New England Public Policy Center at the Federal Reserve Bank of Boston (Zhao and Weiner 2015) provides an index of fiscal disparities for all Connecticut cities (see column 5 of Appendix Table A1). The index is the difference between the cost of providing non-school public services (costs) and the economic resources available to pay for those services (capacity). A larger positive (negative) number represents a larger (smaller) disparities, i.e., greater fiscal disparity since the cost of service exceeds (is less than) the resources. To better see the relationship between local government sales taxes and fiscal disparities we plotted estimated revenue per capita for the Local Sales Tax and Regional Sales Tax against the fiscal disparity index in Figure 4 and Figure 5, respectively. The correlation coefficient between the index and Local Sales Tax revenue per capita is -0.13, and -0.26 for the Regional Sales Tax, which suggests that larger sales tax revenues per capita are associated with towns with greater fiscal health. As can be seen most of the towns are concentrated near the zero value of the index, particularly for the Local Sales Tax. However, even in the mass of towns near zero fiscal disparity, the correlations with sales tax revenues are about the same as reported above. So, it appears that neither a local or regional sales tax will reduce the fiscal disparities between towns.
Figure 4. Local Sales Tax and Fiscal Disparities



Figure 5. Regional Sales Tax and Fiscal Disparities

We also considered the relationship across towns between sales tax base per capita and the property tax base (Grand List) per capita. The relationship is similar to that shown in Figures 4 and 5, i.e., sales tax base per capita is positively related to the property tax base per capita, again implying that a local sales tax will not do much to reduce fiscal disparities. This is not surprising since the correlation between the index of fiscal disparities and the Grand List per capita -0.47.




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